Direct linking of autonomic activity with typed text: The CARMEN machine

A technique that allows researchers to simultaneously record typed text and link each typed word with up to four channels of autonomic nervous system activity is described. The computer-based system is useful for studying the biological correlates of language production. The system, which works with J&J biofeedback equipment, can be adapted to virtually any monitoring equipment that can provide A/D conversion. Suggestions for data analyses are included.